Across
- 4. wall is one epithelial cell thick
- 6. supply blood to the head and neck
- 7. heartbeat felt through artery wall
- 9. wall dividing a cavity
- 10. smaller version of vein
- 11. name for 2 upper chambers of heart
- 13. help keep blood moving one direction
- 14. carries blood away from heart; large blood vessel
Down
- 1. big veins carry O2 poor blood to right atrium
- 2. valve between lft atrium & lft ventricle
- 3. name of two lower chambers of heart
- 5. valve between rt atrium & right ventricle
- 8. carries blood to heart thinner walls than artery
- 12. like artery, only smaller
- 14. largest single artery in the body